Results 111 to 120 of about 26,666 (201)
Gaoya dianqi, 2019 由于高压断路器运行工况复杂,影响因素众多,使得每种故障状态的发生都有多方面的成因。一方面,多类故障特征信号可能对应同一故障;另一方面,一类特征信号也可能反映不同故障。并且,多类故障之间可能存在不相容的情况。由此可见,多类故障之间的不相容性和故障的多样性、复杂性一样,是高压断路器诊断的重点与难点。注意到现有高压断路器诊断方法多偏重于故障的多样性、复杂性特性,而忽略了不同类别故障之间的不相容性。文中借助于多极模糊集在解决多类别不相容分类特性的优势,提出了一种高压断路器故障诊断的多极分析方法。首先 ...
罗琦, 杨林, 韩莹, 史凯
doaj
MXene‐Based Materials: Compositional Engineering for High‐Performance Microwave Absorption
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The rapid advancement of aerospace and electronic information technologies has imposed increasingly stringent requirements on microwave absorbing materials (MAMs), such as high absorption efficiency, lightweight, and environmental stability, making the development of advanced MAMs urgent for both civilian and national defense applications ...
Pan‐Pan Zhou +8 more
wiley +1 more source
Wildlife Letters, Volume 4, Issue 1, Page 42-55, March 2026.This review summarizes the status of musk deer in China, highlighting severe population declines due to illegal hunting and habitat loss, and proposes integrated conservation strategies including habitat protection, captive breeding, and law enforcement to support the recovery and sustainable management of this ecologically and economically important ...
Feng Jiang +8 more
wiley +1 more source
Shuitu Baochi Xuebao目的为探究不同林分类型草本多样性与土壤理化性质相互关系的差异。方法以晋西北黄土区油松纯林、小叶杨纯林、油松小叶杨混交林、小叶杨柠条混交林4种典型人工林为研究对象，分析不同林分类型草本多样性与土壤理化性质差异，并研究其相互关系。结果1）研究区内林下草本共计12科30属35种，优势种以禾本科为主，4种典型人工林Simpson多样性指数、Pielou均匀度指数和Margalef丰富度指数均存在显著差异（p<0.05），且小叶杨柠条混交林水平最高。2） 4种典型人工林土壤理化性质也存在显著差异（p< ...
余锦亚南 +8 more
doaj
Zhongshan Daxue xuebao. Yixue kexue ban, 2000 【目的】观察错配修复基因产物hMSH2 在涎腺良恶性组织中的表达。【方法】应用免疫组化技术检测正常和炎 症涎腺、多形性腺瘤、粘液表皮样癌、腺样囊性癌和腺癌组织的hMSH2 表达。【结果】hMSH2 在正常和炎症涎腺组织导管上 皮细胞的胞核、胞浆阳性表达, 在腺样囊性癌和腺癌肿瘤细胞的胞核呈强阳性表达, 但在多型性腺瘤、粘液表皮样癌组织不表 达。【结论】部分涎腺肿瘤组织出现错配修复基因产物hMSH2 的表达异常。
程 斌 +4 more
doaj
A Tale of Two Programs? Stigma and Administrative Burdens in CHIP and Medicaid
World Medical &Health Policy, Volume 18, Issue 1, March 2026.ABSTRACT One contributing factor to undersubscriptions is administrative burdens. To explore whether program stigma affects attitudes about administrative burdens, a survey (N = 2204) was fielded to assess differences in attitudes about seven policies decreasing administrative burdens and two policies increasing administrative burdens.
Simon F. Haeder
wiley +1 more source
Functional Ecology, Volume 40, Issue 3, Page 636-654, March 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract The nested subset pattern (nestedness) has been widely used to explain species distributions in island and fragmented systems. Mountain sky islands serve as critical natural laboratories for understanding the evolutionary consequences of geographic isolation and climate
Caiwen Zhang +5 more
wiley +1 more source